Stitch-forming mechanism.



0. B. BROWN.

STITCH FORMING MECHANISM.

APPLICATION FILED 00119, 1911. 1,1 1 1,1 32 Patented 801111221914.

2 SHEETS-SHEET 1.

WITNESSES:

THE NORRIS PETERS 50., PHOTU-LITHQ, WASHINGTON, U. L,

WITNESSES:

O. E. BROWN.

STITCH FORMING MECHANISM.

APPLICATION FILED OCT. 19, 1911- Patented Sept. 22,1914,

2 SHEBTS-SHEET 2.

IIVVEIVTOR lzygm I TTOR/VEY THE NORRIS FETERS 17f! nHDTO-LITHQ.WASHINGTON. L). C.

OTIS E. BROWN, OF BROCKTON,

MASSACHUSETTS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, ACORPORATION OF NEW JERSEY.

STITCH-FORMING MECHANISM.

I Specification of Letters Patent.

Patented Sept. 22, 1914.

Application filed October 19, 1911. Serial No. 655,518.

To all whom it may concern:

Be it known that I, Orrs E. BROWN, a citizen of the United States,residing at Brockton, in the county of Plymouth and State ofMassachusetts, have invented certain new and useful Improvements inStitch- Forming Mechanisms, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to an improvement in stitch-forming mechanism,and particularly to that class adapted for handling a waxed thread; andit has for its object to increase the durability and certainty of actionof the mechanism in the casting of the needle-thread loops about a lowerthread.

According to the present improvement,

the loop-taker is constructed preferably in the form of, a shuttlehavinga loop-seizing beak formed with a shoulder adjacent its throatadapted to be entered and engaged by a rotary shuttle-driver betweenwhich and the beak the thread-loops are introduced by a loop-controllerdisposed adjacent the path of reciprocation of the needle. The needle ispreferably of the open-eyed or barbed type, and the loop-controllerperforms the additional function of preventing the thread-loop by theneedle under the action of the shuttle.

The shuttle is preferablygiven a plurality of rotations for eachreciprocation of the needle and is formed with an eccentric threadcavity in which is journaled a nonrotary thread-case whose movementstoward and from the work under the action of the shuttle causes it todraw off a supply of lower thread in opposition to the stitchsettingaction of the take-up to insure uniformity in the positioning of theinterlock of the upper and lower threads and prevent disturbance of onestitch by the setting of the succeeding stitch.

According to the present invention the shuttle-race is formed at theface adjacent the needle with a fixed bearing lip interrupted adjacentloop-seizing position to permit the proper handling of the needlethreadloops, and has also fitted therein a wearing ring having a threadclearance cut in its operative face affording with the fixed bearing lipa journal for the rim of. the shuttle. Means are provided foroscillating-the wearing ring so as to position its clearance cut forrelease of the needle-thread loop I as the shuttle reaches its cast-offposition, and to advance the same so as to partially brldge over the gapin the shuttle bearing as the beak of the latter approaches and passesloop-seizing position, thereby steadying the shuttle at the criticalpoint in its movement and insuring precision in the loop-seizing action.

The invention will be understood by reference to the accompanyingdrawings, in which- Figure 1 is a side elevation of the machine with theframe in section. Fig. 2 is a partial front end elevation of the lowerportion of the machine with the needle mechanism wholly removed, andFig. 3 a similar view omitting the frame and rep resenting a portion ofthe needle mechanism. Fig. 1 is an enlarged sectional elevation of theshuttle and its race. Fig. 5 is a perspective view of the shuttle andthreadcase partly in section, and Fig. 6 a side elevation of the samewith the needle and the loop-controller. Fig. 7 is a perspective view ofthe shuttle-race with the wearing-ring applied thereto. Fig. 8 is a rearside elevation of the shuttle audits driver. Fig. 9 is an enlargedperspective view illustrating the action of the loop-controller indeflecting a needle-thread loop into the shuttlethroat. Fig. 10 is aperspective view of one of the thread-case holding arms. Fig. 11 is'aperspective view of the shuttle-driver and a portion of the gear bywhich it is carried. Fig. 12 is a perspective view of one of thebearing-lip sections of the shuttlerace.

The machine is shown herein constructed as represented in myapplications Serial Nos. 651,551 and 651,556, filed September 27, 1911,and has a frame comprising the hollow base 1, the tubular standard 2 andhollow overhanging arm 3 formed with the hollow head 4 and in which isjournaled the main-shaft 5 carrying the balance-wheel 6 and belt-pulley7. The main-shaft has fixed thereon by means of the set-screw 8 the hub9 of the needle-actuating eccentric 10 embraced by the strap 11connected through the pitman 12 with one. arm of the rocker 13 having asecond arm 14 connected by means of the pitman 15 with a crank carriedby the needle-actuating rock-shaft 16. The rock-shaft 16 carries at itsforward end a cranlearm 17 connected by the pitman 18 60 resented moreparticularly in Figs. 4 and 5.

sion spring 47 pivotally with the collar 19 fixed upon the needle-bar 20carrying the barbed or open-eyed needle 21 and journaled in the bearingbosses 22 of the-jogging needle-frame 23.

The needle reciprocates through the usual aperture in the throat-plate24 and the upper thread n is laid within its throat by means of an eyedreciprocating thread-arm 25 working in conjunction with a vibratorythread-measuring hooked arm 26 which serves to engage the thread betweenthe eye of the-thread-arm 25 and the needle aperture of the throat-plateto draw the samelaterally over the lateral finger 27 of the rigidthread-supporting arm 28 sustained by the bnacket-armhead 4. The shuttle29 is in the form of a disk cut away on one side to form a throat orrecess 30 and provided adjacent one end of said recess with theoutwardly extending beak 31' having upon its inner edge and adjacentsaid recess a shoulder 32 for engagement of the shuttle-carrier.. AsshownImore particularly in Fig. 4, the shuttle-beak 31 is slightlyoffset beyond the outer-face ofthe shuttle body.

wThe shuttle is shown provided near its outer .face with the peripheralgroove 33 having a conical rear wall reversely inclined from therearwardly extending conical portion: 34. The shuttle body is formedwithan eccentric cylindrical aperture 35 in which isjournaled the peripheryof the cylindrical thread-case 36 formed at its inner end with aperipheral rib 37 entering a corresponding groove in the'shuttle bodyand having its forward end closed by a web 38 formed with the tubularbobbin supporting post 39. Confinedwupon'. the post 39 by means of thespring-controlled latch-lever 40 is the under thread bobbin 41.

At its outer end, the bobbin-case is locked Within the shuttle by'meansof the segmental plate 42 let into and secured upon the Web 38 by meansof screws 43' and having its outer edge extending slightly beyond therim of the bobbin-case. The plate 42 is provided with a rigidthread-delivery arm 44 formed in its outer end with the guide aperture45 and having pressed against its side "face-by means of the screw 46the tenconnected by means o'fvthe pin 48 with the plate 42. Thelowerthread t isled from the bobbin outwardly through the thread passage 49in the wall of the thread-case and thence through the aperture 50 of theplate 142 from the mouth of which itis led between theinner side of thearm 44 and the tension spring 47 and thence through the deliveryaperture 45 to the work, as repportion of the base 1 the footi51'of theV annular shuttle-race support 52 to the outer face of which is securedby means of the screws 53 the holding ring 54 having'secured to itsouter 'faceby means of the screws 55 the segmental plates 56 formed withoverhanging bearing lips 56. entering the groove 33 of the shuttle and"fitted-to the conical rearward wall of the" same.

Three of thesesegmental plates are shown,

with the adjacent extremities of those at opposite sides of the shuttleseparated by a suitable space to permit the freemanipulation oftheneedle-thread loops by the shuttle at the upper side of the race andadjacent the loop-seizingposition-of the shuttle. The

inner edge of the holding ring 54 is formed with an annular groove 54 inwhich is fitted the wearing ring 57 having its conical inner face 57fitted to the'rearwardlyextending conical face 34 of the shuttleandhaving in one side a clearance, out; 58 extending partly through thesame. The wearingring 5i has-a backwardly offset an'd laterallyextending rigid arm 59'-carrying a ball-stud 60 to be later referred to;1 'r The shuttle-race support 3 52 ing flange 52 to which isfittedjoneend of the carrying 'ring'61 having let' into-the opposite end theflange 62 of the 'shuttledriver 63, of which one extremity .64 isadapted for engagementwith the outwardly inclined end 30*- t and theother end portion: has, an external. recess=65 forming a shoulder 66'for engage? ment with theshoulder=32 of the shuttleof the shuttlethroat30.

has at its rearward end an inwardly: extending bear-- beak. 'The foot-62of 'the'shuttle-driveris secured inplace by means of the screw 67.

The carrying ring '61 is provided-intermediate its-ends with an externalflange formed with gear-teeth 68' which is "confined in place by andconfined in positionby the 'fiatheads 70 of the'bolts 7lq-to whosethreaded rear= Ward ends are. applied the:nuts"72 having: in practicesuitable means for locking the rotary shaft'? 5 journaled uponthebase 1and provided with a bevel pini0n .76 meshing with a bevel wheel 77 oftwice its diameter upon theyerticalshaft 78 jour naled within suitablebearings'in thehollow standard 2 and provided upon its Eupper'end 'with"the bevel-gear? 9; meshing with the similar gear 80 fixed upon themain-shaft 5. By the means just. described, the

shuttle-driver. receives two rotations for each slngle rotation of thema n-shaft. As

means of the bushing ring 69 fitted within the bore ofthe shuttle-racesupportthe shuttle-driver carryingring: 61" is journaled in slightlyeccentric relation'with the shuttle, it .will be seen that its drivingshoulders 64 and 66 alternately engage the shoulders 30*.and 32 of theshuttle so as to permit the needlethread loops to pass freely betweenthe shuttle-driver and the shuttle in the casting of the same about thelower thread as fully. shown and described in the United States patentto l/Vheeler and Dial N01 328,165, of October 13, 1885.

The outer end 38 of the thread-case is shown formed with two aperturesafiiording shoulders 81 and 82 for. engagement with the inturnedextremities of the rigid holding arms 88 and 84 which are secured to theexterior of the shuttle-race support 52. In the lateral movement of thethread-case imparted by the rotation of the shuttle, the shoulders 81and 82 are shifted alternately in engagement with said respectiveholding arms 83 and 84 which serve to prevent the rotation of thethread-case, the outer limb of the needle-thread loop passing theextremity of each of said holding arms across the apertures of thethread-case.

Tapped into the forward end of the base 1 is a fulcrum-screw stud 85upon which is journaled the lower end of a vibratory lever 86 carryingat its upper end a stud embraced by one of the socketed ends of thedivided link 87 .whose opposite end embraces the ball-stud 60 of the arm59 carried by the wearing ring 57. The lever 86 is connected near itsupper end by means of the screw-pin 88 with one end of the pitman 89whose opposite end embraces the crank-pin 90 carried by the gear-wheel73. Bythe connection just described, the wearing ring 57 is given anoscillating movement for eachrotation of the shuttle, and is so timedthat the clearance cut or recess 58 assumes retracted position as theshuttle reaches its cast-off position slightly beyond that representedin Fig. 2, and advances toward loop-seizing position as the shuttlereaches its corresponding position as rep resented in Fig. 3. By thismeans, the clearance cut or recess is properly positioned to permit thefree drawing u of the needle-thread loop cast off by the shuttle overthe thread delivery arm 44 of the thread-case while the wearing ringadvances thereafter so that the adjacent bearing portion is caused topartially bridge over the space between the upper extremities of thesegmental bearing lips 56 when the shuttle advances to its loop-seizingposition, thereby stea'clying the shuttle and insuring precision in theseizure of the succeeding thread-loop from the needle. To furtherfacilitate the handling of the needlethread loops, the edge of theholding ring 5 1- is slightly cut away at 548 at its forward face, asrepresented in Fig. 7.

As shown and described more fully in m 65 pending application Serial No.661,554, the

the lower end of the link take-up lever 91 is mounted upon the fulcrum-pin 92 and carries upon its rearwardly extending arm 93 the stud 91 embraced by 95 whose upper end is entered by the stud 96 carried bythe angle-lever 97 fulcrumed at 98 and carrying the roller-stud 99 whichis adapted to enter the cam-groove 100 in the cam-cylinder 101 fixedupon the main-shaft 5. The needlethread is led from the source of supplyover certain guide-rollers mounted respectively upon and independentlyof the take-up lever 91, and finally over the guide-roller 102 at theforward extremity of said lever and thence downwardly over a fixedguide-roller 103 to the eye of the vibratory thread-arm 25 and thence tothe-fabric m, as represented in Figs. 1 and 2.

The material is punctured for each stitch preparatory to the upwardthrust of the needle for seizure of the upper thread by means of the awl104 carried by the reciprocating awl-bar 105 journaled in the head 4: ofthe bracket-arm.

As described more fully in my application Serial N 0. 651,556, lateraljogging movements are imparted to the needleframe 23, to cause the feedof the work by the lateral movement of the needle when in its upperposition as represented in Fig. 1, by means of a train of mechanismactuated by the feed-cam 106 fixed upon theupright rotary shaft 78.

- Secured upon the needle-frame by means of the fastening screw 107 isthe shank 108 of the loop-controlling blade 109 disposed intermediatethe parallel vertical planes of movement of the needle and theloop-taker beak and whose thread-engaging upper edge 110 is disposed atthe level of or slightly above the outer face of the shuttle-driver 63and substantially parallel with the path of movement of the shuttle-beakat loop-seizing position. As represented in Fig. 9, the face of theloop-controller nearer the needlepath is cut away to afford clearancefor the needle and forms with the part of the blade adjacent the shank adetaining shoulder to retard the casting off ofthe limb of theneedle-thread loop extending between the needle-eye and the throat ofthe loop-taker in the loop-casting movement of the latter. 1n theadvance movement of the loop-taker beak between the positionsrepresented in Figs. 3 and 9, the outer limb of the needlethread loop ispressed downwardly by the inner edge of the loop-taker beak upon the topof the loop-controller which temporarily sustains the same to maintainthe loop within the throat of the needle during the initial portion ofthe loop-casting action, and in the continued movement of theloop-taker, the said limb of the thread-loop is thrust upwardly by theloop-controller clear of the notch in the outer edge of theshuttledriver and beyond the shoulder 32 into the throat of theloop-taker along the inner edge of which itslips in the continued motionof the loop-taker to cast-off position, in a manner well known. In thecontinued movement of the loop-taker from the position represent-ed inFig. 9, the lead of the said limb of the needle-thread loop becomes suchas to cause it to slip off the loop-detaining shoulder afforded by theupper edge 110 and to be drawn along the cast-off face 109 of. thecontroller adjacent the needle by 7 therefore-varies with differentadjustments of throw of the feed-actuating mechanlsm,

it is important that the loop-controller maintain its initialrelationwiththe needle at all times. This is accomplished in the present machineby mounting the loop-controller upon the jogging needle-frame.

In the operation of the machine, the needle rises through the puncturemade by the awl into the position represented in Fig. 1 in ;which thefeeding action occurs and the upper thread is laid in the needle-throatby means of the thread-arm 25. As the needle descends, the take-updelivers slack thread and the thread-measuring arm 26 advances torelease the thread. As the needle reaches the position represented inFig. 3, with its eye slightly below the path of movement of theshuttle-beak, its thread-loop is entered by the point of the shuttle. Atthis time, the wearing ring 57 is in its advance position with theextremity of its operative surface 57 adjacent the clearance cut 58substantially opposite the needle so as to bridge over the gap betweenthe upper extremities of the bearing lip 56 and to steady the shuttle asit enters the needle-thread loop. As the shuttle continues its movement,the outer limbof the needle-thread loop is deposited on the upper edge110 of the loopcontroller blade 109 while the needle continues itsdescent, thereby holding the upper thread within the needle-throat. andin the further traverse of the shuttle the threadloop is deflected overthe shuttle-driver and into the shuttle-throat as before explained. In.performing the remainder of its loopcasting movement, the shuttlecarries the.

needle-thread loop successively under the extremities of the thread-caseholding arms 83 and 84.

extending from the same through the needle aperture in thethroat-pla te.About as the shuttle reaches cast-off'position, the wearing ring 57assumes retracted position in which its thread clearance cut 58 ispositioned rear-1 ward of the needle-path and in substantial registerwith the needle aperture of the thread-case arm 4A, thereby providingample space for the drawing up ofthe thread-loop through thethroat-plate by the take-up to facilitate the normal action of thelatter in setting'the stitch.

The'parts are so relatively timedthat as the take-up completes itsstitch-setting action the thread-case receives a quick downward movementconstituting in the present embodiment the effective portion of thebodily lateral'movement due to itseccentric relation with the rapidlyrotating shuttle, whereby the upper and lower threads are simultaneouslydrawn in the opposite directions for effectively and uniformly settingthe stitches anddrawing off a lower-thread supply from the bobbin. Inthisaction, the plural ,rotation of the shuttle relatively to the needlereciprocations performs an important part, in enabling thethread-drawing action of the threadcase to be begun and completed whilethe. upper-thread is taut under the operation of the take-up;

From the foregoing description, it is evident, that while the severalfeatures of the present improvement mutually cooperate to insure thecertainty and effectlveness of action of the loop-taker in manipulatingthe lower thread, certain of such features are capable of useindependently of others, and also that these several features aresusceptible of material modification in construction and arrangement ofparts without departure from the scopeof the present invention. i Q

, Having thus set forth the nature of the invention, what I claim is i v'1. In a. sewing machine, the combination with a reciprocating needle,and a needlethread take-up with means for imparting to the latter anoperative stitch-setting movement for each reciprocation of the needle,of a circularly moving loop-taker, a lower-thread case j ournaled in andin eccentric relation with the loop-taker, means for restraining saidthread-case against rotation, and actuating means adapted to impart tosaid loop-taker a plurality of rotations for each reciprocation of theneedle,

the eccentricity of said thread-case being so disposed that in therotation of the looptaker the thread-case is moved bodily in oppositionto the stitch-setting action offthe take-up. a

2. In asewing machine, the combination with a reciprocating needle, of acircularly moving loop-taker provided with a loopseizing beak, astationary race for said looptaker, a movable wearing piece mounted insaid race to afiord a bearing member for the loop-taker and having onone side an up per-thread clearance recess, actuating means for saidloop-taker, and means for operating said wearing-piece to position itsclearance recess rearward of loop-seizing position in substantially thecast-off position of the loop-taker and advancing the same in thedirection of movement of the loop-taker as the beak of the latterreaches its loop-seizing position. i

3. In a sewing machine, the combination with a reciprocating needle, ofa circularly moving loop-taker provided with a loopseizing beak, astationary race for said looptaker provided with a fixed bearing lipinterrupted on the loop-seizing side of the race, a wearing ringjournaled in said race to afford a bearing member acting in conjunctionwith said bearing lip to sustain and guide the loop-taker and having onone side an upper-thread clearance recess, actuating means for saidloop-taker, and means for oscillating said wearing ring to position itsclearance recess alternately at opposite sides of the loop-seizingposition of the looptaker,

4. In a sewing machine, the combination with a reciprocating needle, ofa circularly moving loop-taker provided with a loopseizing beak, astationary race for said looptaker provided with a fixed bearinglipinterrupted on the loop-seizing side of the race, a wearing ringjournaled in said race to afford a bearing member acting in conjunctionwith said bearing lip to sustain and guide the loop-taker and having onone side" an upper-thread clearance recess, actuating means for saidloop-taker, and means connected with the loop-taker actuating means forimpartingoscillatory movements to said wearing ring and timed to movethe part thereof containing the clearance recess in advance of theloop-taker beak as the latter passes its loop-seizing position.

5. In a sewing machine, the combination with a reciprocating needle, ofa circularly moving loop-taker provided with a loopseizing beak, astationary race for said looptaker, a wearing ring journaled in saidrace to afford a bearing member for said looptaker and formed with anupper-thread clearance recess, means including a rotary shaft forimparting operative movements to said loop-taker, a crank-pin carried bysaid shaft, and a connection between said crankpin and the Wearing ringfor imparting oscillatory movements to the latter to position itsclearance recess alternately at opposite sides of loop-seizing positionand in advance of the loop-taker beak when in loop-seizing position.

6. In a sewing machine, the combination with a reciprocatory needle, ofa circularly moving loop-taker provided with a loopjseizing beak formedwith a shoulder ;cent said throat, a race for sustainlng and seizingbeak, a stationary race for said looptaker a wearing ring journaled insaid race to afford a bearing member for said looptaker and formed withan upper thread clearance recess, means including a rotary shaft forimparting operative movements to said loop-taker, a crank-pin carried bysaid shaft, a vibratory lever mounted upon a fixed fulcrum, a linkconnection between said vibratory lever and said wearing ring, and apitman connection between said crank-pin and said vibratory lever.

In a sewing machine, the combination with a reciprocating needle, of acircularly moving shuttle having on one side a eripheral throat orrecess and provided with a loop-seizing beak having a shoulder adjacentsaid throat, a race for sustaining and guiding said shuttle, a shuttledriver adapted for engagement with said shoulder of the shuttle-beak,shuttle-driver actuating means, and a loop -controller mounted adjacentand independently of the needle and in fixed relation to the path ofreciprocation of the needle and adapted to deflect one limb of theneedle-thread loop over the shuttledriver and into the throat of theshuttle.

8. In a sewing machine, the combination with a reciprocating open-eyedneedle, and a laterally ogging frame in which the same is mounted toreciprocate, of a circularly moving shuttle having on one slde aperipheral throat or recess and provided with a loop- EtClJEL- guidingsaid shuttle, a shuttle-driver adapt ed to engage said shoulder of theshuttlebeak, shuttle-driver actuating means, and a loop controller fixedupon said jogging frame and arranged intermediate the paths of movementof the needle and the shuttlebeak and adapted to deflect one limb of theneedle-thread loop over the shuttle-driver and into the throat of theshuttle.

9. In a sewing machine, the combination with a reciprocating needle, anda needlethread take-up with means for imparting to the latter anoperative stitch-setting movement for each reciprocation of the needle,of a loop-taker mounted to move in a circular path upon an axis passingthrough the body of the same, a lower-thread case journaled in and ineccentric relation with the looptaker, means for restraining saidthreadcase against rotation, and actuating means adapted to impart tosaid loop-taker a plurality of rotations for each reciprocation of theneedle, the eccentricity of said thread case being so disposed that inthe rotation of the loop-taker the thread-case is moved in opposition tothe stitch-setting action of the take-up.

10. In a sewing machine, the combination with a reciprocating needle, ofa circularly moving loop-taker, a lower-thread case jourtinge and ineccentric relation, with the loop-taker from" which it is adapted toreceive I lateral r bodily, movements, means 1 forrestrainingsaidthread-case a ainst rotation, '5 actuating means adaptedto lmpartto said loop-taker awplurality of rotations for eachreciprocation of the needle, and needle thread takeup. with actuatingmeans therefor for imparting thereto a stitch-setting 1'0 actioniniopp'osition, to thebodily lateral movement" of the threa dcase and:beginning before the accomplishment of a complete excursion of theshuttle from loop-seizing positiont, v

11 lna'sewing machine, the combination with a' work-support, a needlesustained at. one side of said Work-support, means for imparting tovsaidneedle reciprocatory movements through said ,work support, and aneedle-thread take-up arranged at the oppositesid, of said work-supportfrom the needle an provided with meansl or imparting to it an, operativestitch-setting movement for each reciprocation of the needle, of acircularly moving loop -taker I mountedjat theisame side of the ork-supportjas the needle, a lower-thread case journjaled in and in eccentricrelation with the loop -taker, means for restraining said, thread-caseagainst rotation, and actuating means adapted to impart to said looptaker ahplurality of rotations for each reciprocation of the needle, theeccentricity of said thread -case being so disposed that in the ro-,tation of the loop-taker the thread-case is mo ed in opposition to thestitch-setting action ot the take-up.

,12. In a sewing; machine, the combination withia reciprocatingopen-eyed needle, of v clrcularly moving shuttle having on one sidecircularly moving shuttle havingon one side a, peripheral throat orrecess and. provided with ai loop-seizing beakfo'rmed withqa shoulderadjacent said throat, alrace for sustaining and guiding, said shuttle, ashuttle driyenadaptedfto engage saidshoulder 4 5 of the shuttle-beak,shuttle-driver actuating means, and, a loop-controller mounted adjacent,said needle and formed withloopdetaining and loop cast-ofl portions saidy loop-controller being arranged topresent its loop-detaining portlon tothe needle-thread loop,betweentheneedle-eye and the shuttle throat fordetaining the thread-loop within the, ,needle-eye and to present, itscast-off portionthereafter to said" thread-loop, to cle flectttlie samefor disengagement from the needle-eye. J 1 I 13. In a sewing machine,the combination with a reciprocating.open-;eyedneedle, or a a peripheralthroat, or recessandprovided withta loop-seizing beak formed with ashoulderjadjacent, said throat, a race for sustaining and'guiding saidshuttle, ashuttie-driver adapted;to engageasaid shoulder of theshuttle-beak, shuttle-driver actuating 1neans,,and aloop-controller,mounted adjacentsaid needle and comprising ablade disposed between the' needle and" the shuttle-= path; with its side-facepresenteduto the needleand an adjacent edge arranged sub-,

"stantially parallel, with-the, path of the shuttle-beak at loop-seizingposition. In testimony whereof, I have signed my name .tothisspecification, in the presence of two subscribing WltIlBSSGS-r i Q iI a, one E. BnowN. Witnesses: v a

H. J. Mum,

ca ie' ot'fliis 'patelic maybe obtained for fivecents leach, byaddressing the Commissioner of Patents,

Washington, D. G.

